Pipeline casing isolators/spacers are used to separate the pipeline and casing when pipeline crossing highway or railway. Spacers shall ensure electrical insulation between the two pipes. They shall be made of materials which do not conduct electricity and permanently resistant to mechanical corrosion as well as mechanical and thermal shocks and stresses. The major technological index of CORRTECH¡¯s spacers has reached the international standards.

Specification:

Reference table for ZDB Pipeline Casing Isolators/Spacers

Supports' Diameter		Outer Diameter of Pipe	Type and Quantity Need
mm	inch	mm
100	4	108	3MB
150	6	159	4MB
200	8	219	3ZDM
250	10	273	3ZDM+1MB
300	12	325	4ZDM+1MB
350	14	377	5ZDM+1MB
400	16	426	6ZDB
450	18	478	7ZDB

Reference table for ZDA Pipeline Casing Isolators/Spacers

Supports' Diameter		Outer Diameter of Pipe	Type and Quantity Need
mm	inch	mm
500	20	529	5ZDA
600	24	630	6ZDA
700	28	720	7ZDA
800	32	812	8ZDA
900	36	914	9ZDA
1000	40	1016	10ZDA
1200	48	1219	12ZDA
1400	56	1422	14ZDA